Solid-State-Relay kit for fuel pump PWM control

Precision Raceworks Solid-State Relay Upgrade Kit

The Precision Raceworks Solid-State Relay Upgrade Kit includes both the control interface module and a matching solid-state relay, providing a modern solution for building and controlling high-power auxiliary fuel pumps or similar loads at the fuel tank. The kit replaces a traditional mechanical relay, enabling smoother PWM control, improved durability, and significantly longer service life with no wear-prone contacts.

Well suited for higher-level performance builds where fast switching, stable operation, and interference-free load control are required. Solid-state technology reduces electrical noise, improves response time, and allows precise control even under high load conditions.

A typical use case would be a high-power BMW or other performance project running a standalone ECU or a Motiv Motorsport Reflex+ system where the pump is controlled from an external output signal.

Please note this product is universal and not vehicle-specific. Final installation and calibration should always be performed by a professional to ensure proper system control and safe operation.

• Complete kit: includes both the solid-state relay and interface control module.
• PWM compatible: ideal for applications using pulse-width modulation load control.
• No mechanical contacts: maximum lifespan and reliability.
• Fast response: suitable for rapid switching without delay.
• Automotive-grade design: resistant to vibration, temperature fluctuations, and harsh conditions.

Specifications

• Relay Type: Solid State
• Nominal Voltage: 12 V DC
• Rated Continuous Load: ~20 A at 85 °C
• Max Inrush / Overload Protection: Up to ~80 A (overload protected)
• Switching Frequency Range: 0 Hz – 1000 Hz
• Duty Cycle Range (PWM): 10 % – 90 %
• Contact Configuration: SPST / Normally Open (N/O)
• Operating Temperature: –40 °C to +125 °C
• IP Rating: IP67 (sealed and waterproof)
• Mechanical Cycling: ~10,000,000 operations
• Terminal Compatibility: ISO 7588-1 / ISO 8092 standards
• Vibration and Shock: Designed for automotive environments

Notes:

• Optimized for PWM applications requiring frequent switching without mechanical wear.
• To properly handle inductive loads such as fuel pumps, the relay should always be used together with the included interface module.
• The relay is sealed, vibration-resistant, and suitable for harsh automotive environments.